Lock



Jan. 30, 1923.

J. C. T. cRowDEN.

LOCK. Fx LED OCT. 3

4 SHEETS-SHEET 2 clecengse/c/L,

Jan; 30, 1923., 1,443,563

J. C. T. CROWDEN.

LocK. FILED OCT. 3, 1921. 4 SHEETS-SHEET 3 /n/ Ex sauf-0% ofJohn CT, Crowd/en.

decesed.

atented dan, Sil, i923.

starte e a n r JHN CARTWRIGHT TRIG'UE CRSVJ'DEN, DECEASED, LATE OE BANDIKUI, RAJPU'TANA, INDA, BY TEARY CROVDEN AND ARTHUR FRLNK BARNARD EXECUTORS, BOTH OF DUNSTABLE, ENG-LAND.

Loon.

Application led October 3, 1921. Serial No..504,973.

To all w71 om, it may concer/1t:

Be it known that we, MARY CnownnN and ARTHUR FRANK BARNARD, both subjects of the King' of Great Britain, and residents of Southdene, Dunstable, in the count of Bedford, England, and Albion House, unstable, in the countyv of Bedford, England, respectively, are the legal representatives of JOHN liisiwniorrr Tnreun CnowDEN, de ceased, lately of the Lawn, Bandikui, Jaipur State, Bajputana, india. who has invented certain new and useful Improvements in Locks (for which he has tiled an application in India, @ctober ith, 1920), ot which the following is a specification. y

This invention relates to locks particularly adapted for use in locking the doors ot railway vehicles, stores, magazines, safes and so forth.

According to the invention a locking spindle is adapted to be turned into the locking position for engagement with a locking bracket and is adapted to be locked in the locked or unlocked position by means of a key of which the movement is controlled by means of a series of combination rings. The key is adapted to engage with one of a number of sets of recesses in the brackets in which the spindle is rotatably mounted, the key fitting into a keyway in the spindle. The key is also provided with projections with which engage a series of combination rings which can be turned around the spindle and the key and which are each provided with a recess. ln order to insert or'withdraw the key the recesses must all-be brought into alignment with the set et recesses in the brackets with which the key is in engagement or is to he brought into engagement.

ln the accompanying drawings trated by way of example one form ot construction according to the invention.

Figure l is front elevation, Figure i2 is a vertical section on the line 2-2 of Figure l0. Figure is a detail View, Figure 4: is a side elevation of the key, Figure 5 is a plan ot one or" the combination rings, Figure 6 is a section on the line 6 6 of Figure 5, Figure 7 is a plan of the lock, Figure 8 is a cross section on the line 8 8 of Figure 2, Figure 9 is a cross section on lthe line 9-9 is illus-A ot Figure 2, Figure l0 is a side elevation and a part section on the line l0-l0 oic Figure l, and Figure ll is a cross section onthe line ll-ll of Figure 2.

Referring now to the drawings the main spindle, l, of the lock is supported in position and attached to the door or other suitable part ot' the vehicle, safe and the like to be locked by means ot brackets l0, and ll, arranged one Vin front ot' the other, as shown in Figure l0 for example, which are secured in position by bolts` or rivets l5, 1G, 17 and 18. The lower end l0 oi the spindle 1,which forms the actual locking member is oval or elliptical in shape so that when its major axis lies in a plane at right angles to the front -face of the door or the like it can be passed between the jaws Lil of the locking bracket 13 secured to a fixed part of the vehicle or the like. ln the locking positiony the major axis of the lower end 40 of the spindle lies in a plane parallel to the door or the like. The spindle l passes through the holes, 19 and 2O in the brackets l0 and ll, and is retained in position by means of a collar 2l, provided thereon and adapted to be held between the two brackets l() and l1. rlhe spindle l is capable ot' rotation in these holes 19 and 2O its rotation being controlled and limited by a stop 14 fixed to the bracket ll and engaging with a recess in the collar 2l. The spindle l is turned by means of the squared portion 24 thereon and may be turned either by hand orv by a suitably shaped tool adapted to lit on vthe squared portion 24. The spindle l after being turned is locked in the required position by means oit the key 2 which works in a keyway 25 formed in the spin.dleand also in recesses Q5, E27 and 2S 29, in the brackets l() and il respectively. TWhen the key placedl in the keyway 25, and. in the recesses in the brackets l0 and ll it will be seen that the spindle is prevented from turning 1n the holes in the brackets l0 and ll as long as the key 2 held in this position. The key 2 is held in this position by means ot conibination rings 3, 4:, 5, 6 and7 a1id which canbe turned around the spindle l but are prevented from sliding thereon by means of a guide cap 8,1and a lock nut 9.y The rings, a,- 5, 6 'and 47 are notched'as shown at 46 in Figures and 6 to allow ot the passage oit the key 2. The guide cap 8 and the lock nut 5% are also sin'iilarly notched lor the same purpose. It will therefore be seen that when the notches in the members 2%, l, 6, 8 and 9 are in alignment with the keyway in the spindle l, and also with the recesses 26 and 28, or 27 and 29, in the brackets l() and ll the key 2 can be passed straight through these parts until it comes into contact with a bracket l2. This bracket 12 is preferably secured to the bracket 1l and serves to limit the downward movement ot the key and also to cover the recesses in the bracket ll. The rings 3 e, 5, 6 and T when turned around the spindle l remain in engagement with the key as the shoulders formed thereon by thel recesses fr? pass throuojh slots BO, 3l, 32, 33 and Sil in the key 2, lt will therefore be seen that it, atter inserting; the key 2 the rings arc rotated, the key cannot be withdrawn vuntil all the notches i-,6 in all the rines are. :1min placed in alignment with the key.

ln order that the rin may readily be set in the required posi on for inserting` or remoaf'ing the key, they are provided with suitable markings such as letters, figures or signs, which are stamped or otherwise marked on the outer circumference there ot. The letters on the separate rings are :uiiapted to be arranged in a series to torre a combination which is known to those per sons deputed and authorized to operate the lock. When the letters 'forming' the combination have been arranged in a str l t line between the two arrows 35, FLC l the key 2 may be inserted or withdrawn. @ne of the arrows is preferably marked on the guide cap S and the other on the bracket l0. It will thus he seen that when a ring is so placed that the notch t6 in it is in a straight line with the key 2 a single letter will be contained in the straight line between the arrows. rl`his letter therefore forms the combination or operating letter, tor that particular ring' and in order that it may be known readily Ytor the purpose et arranging the combination it is stamped or otherwise marked in a convenient position on the top or bottoni tace or" the ring.

The key i2 is niade thicker at its upper end as shown at 52 so as to cover the end olf' the slot in the lock nut. ik and thus preient the introduction oil'V a 'teeler or a thin piece of wire or the like tor the purpose ot picking` the lock by ascertainii'igy; tho po sition oi the slots in the rings. A hole is provided at 37 in the lug ofthe key 2, tor the purpose oli assisting the operator in withrhawingthe key troni the lock. A pin is passed `through this hole and by means et a conveniently shaped lever acting on this pin and against the top\of the lock nut 9 the key/may be withdrawn readily when the rings are in the correct position. This lever may be incorporated with and made part or the wrench, already referred to, which is adapted to tit on the square end oit the spindle l. rlhis hole also serves as a means whereby' a sea-l may be allixed to the lock. cord, string,` or wire can be threaded through this hole and also through the hole. 38, in the squared end 2e ot the main spindle l, and the seal may then be affixed to this cord, string or wire. Another hole is also provided'at 39, in the lug of the key 2, Ytor the purpose of attaching a chain or other convenient fasteningwhereby the key may be securely attached to the lock and its loss prevented when it is withdrawn lrom the lock.

rlhe locking;r bracket 13, may be attached in any ronyenient position on the floor O't the vehicle, salie and the like, or it may be attached to a cross bar which may extend across the door ot such vehicle, sate and the like.

When lltted to railway vehicles, in which case there would be one lock on each side ot the Vehicle, each lock would be distinctively numbered as shown at 115, in Figure l.

rEhe two sets ot recesses in the brackets l() and il namely the recesses 26, '27 and 2B, il?) are preferably arranged 900 apart so that the lock may be locked in both the locked and in the unlocked positions. The lock locked in the locked position when the major axis or the oval or elliptical end lo, ot the spindle l is at right angles to the aws all, ot the locking bracket 13, and it is locked in the unlocked position when the minor axis is at right angles to the aws. rlhe capacity for being locked in the unlocked position is provided fior use when the door is to be lett open and unlocked and also when it is required to put the lock out ot action tor any reason.

The hole, 42, in the guido cap S, is ot a conif'eni'cnt irregular shape corresilionding(l to the shape orf the lower end 4t?) of the spindle, l, as shown in Figure 7. The object ot this is to prevent the guide cap S, being' put ;on the spindle inyfthe wrong' pos iion. The lock nut fh is provided with flat sides as shown at 44; to lit :i wrench, Spanner or otiier conrenient tool whereby the nut may' be screwed or unscren'ed tor the piuiliose ot detachino' the guide cap El, and the rines'y Il. 1&5. (l and T and alsolor obteiningv access to the interior ot the lock tor ':leaning: and repairingpurposes,V `This euch or Spanner may also be incorporated with and made part ot the wrench and lever above'reterred to.

Tie combinations termed by the rings may be varied by arranpjinze;- the rings in different orders on the spindle l7 and a number ot ditlerent combinations may thus llO be obtained, rlhe marks on the combination rings are arranged in a certain orderin accordance with any convenient and prearranged master combination so that the lock can only be opened after ascertaining the corre-ct combination. This master combination may, tor example;l consist of an ar- 'angeinent of cert-ain letters, figures or signs on the rings which bear a .certain relation to the operating letters, figures or signs for those rings and by means of which the said operating letters, figures or signs may be ascertained. The master combination may be drawn up and arranged in any convenient manner and shall itself be capable of variation in order that it may remain secret and unknown except to those persons who are authorized to possess such knowledge.

The combination rings are recessed as shewn at 4:7 in Figure 6 and at 47, 48, 4-9, 5U and 51 in Figure 2 to allow of the engagement of the rings with the key 2 and tor the spacing oit the slots 30, 31, 32, 33 and 34 in the key 2.

The parts of the mechanism may be made ci" any suitable material and are hardened, where necessary, to resist wear. The parts, it required may be made of steel or iron treated so as to render it proof against rust or they may be made of nonrusting material. i

t desired the lock may be enclosed inside a. cover of cloth, tarpaulin, leather or other suitable material for the purpose of protecting it troni rain, damp, dust, acid atmosphere and the like.

Having thus described our invention what we claim as new and desire to secure by Letters Patent is 1. A lock comprising a locking bracket having a slot therein terminating in a circular aperture oi larger diameter than the width of the slot. a locking spindle and brackets for rotatably supporting the same, one end of said spindle being ot cross section wider in one'plane than .in a plane at right angles thereto and adapted to be passed through the said slot into the circular aperture said spindle having akey-way thereinn said bracke having a plurality ot sets oif recesses therein in dittereut :,uigular positions, a ke)Y fitting in said key-way and adapted for engagement with the recesses in the brackets. the sets oi recesses iu the brackets beingso arranged that when the key and spindle are turned so that the key engages with one set ot recesses the spindle is locked in a position to enable the end thereof to pass through the slot in the lock ing bracket, whilst when the spindle and key are turned so that the key engages with another set of recesses the spindle is locked in a position to prevent its lower end from passing through the slotv in the locking bracket, and inea-iis for locking and releasing the key.

A combination lock, comprising bracki ets with sets ot recesses Yformed at intervals therein fitting said key-way and adapted for engagement with said sets of recesses, a

locking bracket havin@` a slot therein term1- nating in an aperture. the elliptical end or' the spindle being adapted to'be passed through said slot into the aperture and then turned so as to prevent its passage from the aperture and through the slot, a plurality of combination rings each with a notchtherein rotatably iitting around the spindle and the key, the notches being adapted to permit oi sliding movement oit the key when the notches in all the combination rings are in alignment, whilst the combination rings in other positionsengage with the recesses in the key and prevent sliding movement thereof, a cap itting on said spindle and preventing lateral movement of the combination rings, and a lock nut for securing the cap in position.

3. A combination lock, comprising a locking bracket having a slot therein terminating in a circular aperture of larger diameter than the width of the slot, a locking spindle for engagement with said bracket, said spindle having a keyway therein, a plurality of combination discs each with aV notch therein, said combination rings being rotatably supported on said spindle, brackets in which the spindle is rotatably mounted, each of said brackets having a plurality of recesses therein in diiierent angular positions, a key fitting in said keyway and adapted for engagement with the recesses in the brackets,I

the sets of recesses in the brackets being so arranged that when the key and. spindle are turned so that the key engages with one set ofv recesses the spindle is locked in a position to enable the end thereof to pass through the slot in the locking bracket,l whilst when the spindle and key are turned so that the key engages with another set ot' recesses the spindle is locked 'in position to prevent its lower end from passing through the slot in the locking bracket` and means for locking and releasing said key.

el. A lock comprising a locking bracket having a slot therein terminating in a, circular aperture of larger diameter than the width of the slot, a looking spindle and brackets for rotatably supporting the same, one end of said spindle being ot a cross section wider in one plane than in a plane at right angles thereto and adapted to be passed through the slot into the circular aperture, said spindle having a keyivay therein, said brackets having a plurality of Sets of l'ecqrssw nhfl'en iu liercu nmgfulmf ets: 01' to pecx'ni ci its micas@ thsmifmm. 21ml positions, a, key tlng into said keyway means for lim'ng the tuininfg movement of and dapd t0 lock the Spindle ko be Dmc-1 the locking spindle. v

ets, a plurality of combination rings 'oinably mouued around Said Spindle and key MARY CRVDEN. sind Combmnnou flugs being); Q (laped to A. FRA/3.,N BRNBD,

lock the ky in engagement with the brack- Emecutors of 707m C7. T. 07101065601, deceased. 

